/*
 * JSON lexer
 *
 * Copyright IBM, Corp. 2009
 * Copyright 2016 - Cyberhaven
 *
 * Authors:
 *  Anthony Liguori   <aliguori@us.ibm.com>
 *  Vitaly Chipounov  <vitaly@cyberhaven.io>
 *
 * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
 * See the COPYING.LIB file in the top-level directory.
 *
 */

#ifndef QOM_JSON_LEXER_H
#define QOM_JSON_LEXER_H

#include "qlist.h"
#include "qstring.h"

#ifdef __cplusplus
extern "C" {
#endif

typedef enum json_token_type {
    JSON_OPERATOR = 100,
    JSON_INTEGER,
    JSON_FLOAT,
    JSON_KEYWORD,
    JSON_STRING,
    JSON_ESCAPE,
    JSON_SKIP,
    JSON_ERROR,
} JSONTokenType;

typedef struct JSONLexer JSONLexer;

typedef void(JSONLexerEmitter)(JSONLexer *, QString *, JSONTokenType, int x, int y);

struct JSONLexer {
    JSONLexerEmitter *emit;
    int state;
    QString *token;
    int x, y;
};

void json_lexer_init(JSONLexer *lexer, JSONLexerEmitter func);

int json_lexer_feed(JSONLexer *lexer, const char *buffer, size_t size);

int json_lexer_flush(JSONLexer *lexer);

void json_lexer_destroy(JSONLexer *lexer);

#ifdef __cplusplus
}
#endif

#endif
